Process of making molten peroxids.



No. 879,452. PATENTED PEB. 18, 1908.v H. FOERSTERLING & H. RQGARVBIH.

PROCESS 0F MAKING MOLTEN PEROXIDS. APPLIOATIGN FILED MAR. e, 1907.

UNITED sTATEs PATENT oEErcE.

HANS FOERSTERLING, PERTH AMBOY, NEVT JERSEY, AND HECTOR R. CARVETH, OF

NIAGARA FALLS, NEW YORK, ASSIGNORS TO THE ROESSLER & HASSLACHER CHEM-ICAL CO., Ol" NEW YORK, N. Y., A CORPORATION OF NEW YORK.

PROCESS OF MAKING- MOLTEN PEROXYIDS.

`Application filed March 6. 1907. Serial No. 360.993.

To all whom it may concern.'

Be it known that we, HANS FOERSTERLING, a subject of the German Emperor,residing at Perth Amboy, in the county of Middlesex, New Jersey, andHECTOR R. CAnvETH, a citizen of the United States, residing at NiagaraFalls, in the county of Niagara and State of New York, have invented acertain new and useful Process of Making Molten Peroxide, of which thefollowing is a specification.

The invention relates to a rocess of making fused or molten peroxirs andhas particular reference to fusing or melting sodium peroxid inconnection with which the following is a description of one way ofcarrying out the process.

By our new process we are enabled to make fused or molten peroxiddirectly by bringing air orother oxidizing agent in reaction with thesubstance at such a temperature that the resulting peroxid isinstantaneously molten.

The drawings show diagrammatically a suitable apparatus for use inpracticing our new rocess, which process we shall describe in t 1emaking of fused sodium peroxid although it may be practiced in themaking of other peroxids than sodium.

Heretofore fused or molten sodium peroxid, which substance is of specialutility in generating oxygen, has been made by melting the sodiumperoxid by either indirect heat or electrically. I These recesses areexpensive inasmuch as the so ium eroxid must first be prepared by somesuc process as that described in U. S. Letters Patent to Oastner, No.494,757, or U. S. Letters Patent to Baker and Burwell, No. 7 39,375, andsubsequently heated to a high temperature in order to melt it.

ln the drawings a represents a suitable vessel provided with a waterjacket 'b in order to cool the vessel sufficiently to protect it fromthe oxidizing effect of the molten peroxid.

' c, c, are inlet and outlet pipes for the water jacket b., f

d is a cover, 'preferably making air tight closure of vessel a.

e, c, are electrodes connected by wires f, f, with a suitable source ofelectrical energy (not shown),

g is a tank adapted to ,contain molten sodium and provided with anoutlet pipe h,

l controlled by cock i, discharging into vessel a through coverd.

7' is a pipe adapted to deliver air, preferably under pressure, intovessel a through cover d.

k represents solidied peroxid and Z molten peroxld in a liquid state.

m. is an outletfor the molten peroxid to be withdrawn from vessel a.

Vessel o, should iirst be filled with fused sodium peroxid, kept in astate of fusion by means of a current of electricity passing -be tweenthe electrodes e, c, a lining of solidified peroxid gradually beingformed on the inside of vessel a as shown at c. Molten sodium is thenpermitted to flow through pipe h into vessel a simultaneously with theadmission of air into said vessel through pipe j. The molten sodiumfloating on top of the molten peroxid is rapidly oxidized by the air andtaken up by the molten peroxid, the excess of molten. peroxid-[lowingcontinuously out of vessel a through outlet m. The heat generated byoxidizing the sodium is utilized most economically as experiment showsthat after the reaction has once started little if any heat is requiredto be supplied from the electric generator, the heat generated by theoxidation being practically suflicient'to melt the peroxid formed.

It is to be understood that the process may be varied in many ways.Instead of initially charging the vessel with molten peroxid, causticsoda or any other fusible product which does not react with the peroxidmay be used. Instead of using electricity other methods of heating maybe employed, other metals than sodium, such as any alkaline metal oralloy, or a mixture of them, may be used, and any suitable substance maybe added during the process without departing from the spirit of ourinvention.

What we claim and desire to secure by Letters Patent is 1.v A process ofmaking molten alkaline oxids which consists in bringing the metal to beoxidized into reaction with an oxidizing agent at such a temperaturethat the resulting oxid is instantaneously molten.

2. A process of making molten alkaline oxid which consists in bringingthe metal to be oxidized into reaction with-an oxidizing agent andutilizing the heat generated by the reaction to melt tlie resultingoxids.

3. A process of making molten alkaline Patented Feb. 1s, 190s. d

peroxid Which consists in brin ing the metal sodium into reaction withair and utilizing to be oxidized into reaction wit anoxidizing 'the heatgenerated by the reaction to melt agent at such a temperature that theresultthe resultlng peroxid. i ing peroxid is instantaneously molten. Intestimony whereof We have hereunto 15 5 4. A process of making moltenalkaline l signed our names in the presence of two subperoxid whichconsists in brin ing the metal soribing Witnesses.

to be oxidized into reaction Wit an oxidizing HANS FOERSTERLING. agentand utilizing the heat generated by the HECTOR R. CARVETH. reaction tomelt the resulting peroxid. Witnesses:. 10 5. A process of making moltensodium JEssIE B. MCVEAN,

peroxid which consists ,in bringing molten LOUIS J. HOENIG.

